XRP6275
3A Ultra Low Dropout Voltage Regulator
January 2015
Rev. 2.0.0
GENERAL DESCRIPTION
FEATURES
The XRP6275 is an ultra
a low dropout voltage
regulator capable of delivering 3A output
currents. It is unique in the industry in being
able to operate from a single supply rail of
1.045V to 2.625V without the need for a noise
generating charge pump.
• 3A Output Current
With its ultra low dropout voltage of 138
138mV at
full load guaranteed over temperature, the
XRP6275 achieves conversions
onversions previously
unavailable.
The output voltage can be set as low as 0.6V
with ±0.5% accuracy making the XRP6275
perfectly suited for powering low voltage
devices such as FPGAs, DSPs, ASICs, and
other SOCs.
Built-in
in current limit, reverse bias and thermal
protection ensures safe operation under
abnormal operating conditions. An enable
function, soft start and Power Good flag
complete the feature set.
The XRP6275 is offered in RoHS compliant,
“green”/halogen free 10-pin
pin 3x3mm DFN
package.
• 1.045V to 2.625V
V Single Input Voltage
− Adjustable Output Voltage ≥0.6V
− ±0.5 Output Voltage Accuracy
• Ultra Low Dropout Voltage
− 138mV
mV Max over temp @ 3A
3
− 74mV Max over temp @ 2A
• Power Good Flag
• Enable & Soft Start
• Current Limit and Thermal Protection
• Reverse Bias Protection
• RoHS compliant “Green”/Halogen Free
− 10-pin
pin 3mm x 3mm DFN
APPLICATIONS
• Point of Load Conversion
• Microprocessors, DSPs, FPGAs Supplies
• Networking & Telecom Equipment
• Switching Supplies Post Regulation
TYPICAL APPLICATION DIAGRAM
XRP6275
Fig. 1: XRP6275 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
668
XRP6275
3A Ultra Low Dropout Voltage Regulator
ABSOLUTE MAXIMUM RATINGS
INGS
OPERATING RATINGS
These are stress ratings only and functional operation of
the device at these ratings or above any other of those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
Input Voltage Range VIN, VEN, VPGOOD ........... 1.045V-2.625V
Junction Temperature Range ....................-40°C to 125°C
Thermal Resistance ΘJC DFN10 .............................. 6°C/W
Thermal Resistance ΘJA DFN10 ..........................40.5°C/W
..........................
Input Voltage VIN, VPGOOD ................................
............................................ 3V
Enable Voltage VEN ....................................
.... VIN+0.5V≤3V
Storage Temperature .............................. -65°C to 150°C
Junction Temperature ................................
.......................................... 150°C
Lead Temperature (Soldering, 5 sec) ..................... 260°C
ESD Rating (HBM - Human Body Model) .................... 2kV
ESD Rating (CDM – Charged Device Model) .............. 1kV
ELECTRICAL SPECIFICATIONS
TIONS
Specifications are for an Operating Junction Temperature of TJ = TA = 25°C only; limits applying over the full Operating
Junction Temperature range are denoted by a ““•”. Typical values represent the most likely parametric norm at TJ = 25°C,
and are provided for reference purposes only. Unless otherwise indicated, VIN = VOUT + 0.5V
V and IOUT=20mA, CIN = 47µF,
COUT = 47µF, TA= 25°C.
Parameter
Min.
Input Voltage Operating Range
1.045
Maximum Output Current1
2.625
2.5
598.5
594.0
597.0
592.0
596.0
590.7
Power Supply Rejection Ratio
(PSRR)
Output Noise Voltage
Start Up time
Power Good Threshold
Power Good Threshold
Hysteresis
PGOOD Output Low
© 2015 Exar Corporation
92
mA
EN active
mA
EN active , IOUT=3A
VEN=0V, IOUT=0mA, PGOOD Floating
604.5
606.0
603.0
605.0
602.0
604.0
138
µA
mV
mV
mV
mV
mV
mV
mV
74
mV
0.25
%
VIN=VOUT + 0.5V, 20mA≤I
20mA OUT ≤3A
35
dB
f=1kHz
30
dB
f>300kHz
200
µVRMS
12
601.5
600.0
599.0
4.7
•
•
•
•
•
VIN=2.5V, VOUT>1V
VIN=1.8V
VIN=1.35V
IOUT=3A, VOUT=1.0V (Note 2)
IOUT=2A, VOUT=1.35V (Note 2)
10Hz-100kHz
A
VOUT = 0.9 × VOUT(NOM)
-10
µA
VIN=0V, VOUT=2.625V
160
°C
3.3
Thermal Shutdown Hysteresis
•
6.0
Output Voltage Load
Regulation
Thermal Shutdown
Temperature
V
Conditions
A
Dropout Voltage
Reverse Bias Protection
VOUT Leakage current
Units
2.0
Shutdown Current
Current Limit
Max.
3
Ground Current
ADJ Pin Voltage
Typ.
30
°C
2
ms
94
97
2.8
% of VOUT
VOUT=1.0V
•
VOUT rising
VOUT falling
% of VOUT
0.4
V
•
VIN>1.5V, ISINK=1mA
0.4
V
•
VIN>1.045V, ISINK=100uA
2/11
Rev. 2.0.0
XRP6275
3A Ultra Low Dropout Voltage Regulator
Parameter
Min.
Typ.
Max.
0.43
0.55
0.67
Units
Conditions
Enable Pin Specifications
Enable Threshold Voltage
EN Sink Current
Maximum Allowable EN Sink
Current
EN Source Current
V
•
VEN rising
2.5
uA
EN
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